diff --git a/Gemfile.lock b/Gemfile.lock
index 037a4eb..ebf7be5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -136,7 +136,7 @@ GEM
     nio4r (2.5.2)
     nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)
-    rack (2.2.3)
+    rack (2.2.6.4)
     rack-accept (0.4.5)
       rack (>= 0.4)
     rack-test (1.1.0)